Many times digital illustrators /designers face problems when their work contains text typed with particular typeface and the client does not have the same one installed on his system. After receiving final projects some clients like to mess around with them which usually end as a major issue in press printing. Most of the times projects for the press are very expensive and it is a bad feeling when the printout looks totally different than what your client(s) saw on the screen.
In Adobe Illustrator all this can be avoided by simply outlining the type. To do this, select the areas (objects, layers) where you have text then click on Type > Create Outlines. You can never be insured against misspellings, so before outlining you can make a backup copy of your *.ai file so you keep a version of it with live (editable) text.